Hi, in market for new powerbook..replacing Wallstreet G3 14.1 screen...considering 12.1, Ti 15 1ghz, 17 inch and, of course, wait for new 15.4. Can afford 17 (though it is really stretching it, but I figure will be happy for long time)...reason have Ti15 in there is wondering does anyone worry about Rev A issues with 12.1, 15.4 and 17? i.e. likely to have less problems with Ti since all "kinks" are worked out...worried about paint still though???